


R410A Air-to-Water Heater for Household Hot Water – Integrated
This R410A monobloc air source heat pump offers commercial hot water and OEM-ready supply for distributors.
1. Working air temperature range -15 – 43 ℃
2. Max outlet water temperature up to 60℃
3. Eco friendly, R410A refrigerant
4. Multiple protections and electric heater back up function
5. Stable performance with well-known brand compressor
6. Optional storage water tank with SUS or enamel inner tank
7. Applicable for household, resort or villa
Convenient installation and space-saving
Improving heat exchange efficiency by 15%-20%, complying with EU F-gas regulations and North American environmental standards
With a COP of 3.5-4.2, achieving 75% energy savings compared to electric water heaters, and supporting high-temperature water output of 55-60°C
equipped with a variable frequency scroll compressor and EVI vapor injection enthalpy enhancement technology, suitable for extremely cold and high-humidity regions. 5.Factory direct supply, supports OEM/ODM, preferred by bulk export traders
| Model | KFXRS-3I/b | KFXRS-5I/b | KFXRS-7I/b | KFXRS-9I/b | ||
| Power supply | Ph-V-Hz | 220V/1PH/50HZ | 220V/1PH/50HZ | 220V/1PH/50HZ | 220V/1PH/50HZ | |
| Working temp | ℃ | -15℃~43℃ | -15℃~43℃ | -15℃~43℃ | -15℃~43℃ | |
| Max. outlet Water temp | ℃ | 60℃ | 60℃ | 60℃ | 60℃ | |
| Water Heating | Capacity | KW | 3.5 | 5 | 7.2 | 9 |
| Hot water yield | L/h | 75 | 107 | 155 | 193 | |
| Input | KW | 0.9 | 1.28 | 1.79 | 2.31 | |
| COP | W/W | 3.89 | 3.91 | 4.02 | 3.9 | |
| Rated current | A | 3.97 | 5.8 | 8.23 | 11.17 | |
| Max. input consumption | KW | 1.31 | 1.86 | 2.6 | 3.3 | |
| Max. input current | A | 6.2 | 8.9 | 12.4 | 16 | |
| Starting current | A | 18 | 28 | 35 | 61 | |
| set Temp | ℃ | 25~60 | 25~60 | 25~60 | 25~60 | |
| Water system | Materials of water pipe | copper | copper | copper | copper | |
| Water flow | m3/h | 0.8 | 1.1 | 1.5 | 2 | |
| Water different pressure | Kpa | 60 | 50 | 60 | 60 | |
| Dia. water inlet pipe | mm | DN20 | DN20 | DN20 | DN20 | |
| Dia. water outlet pipe | mm | DN20 | DN20 | DN20 | DN20 | |
| Design pressure | Mpa | 4.2/0.02 | 4.2/0.02 | 4.2/0.02 | 4.2/0.02 | |
| Compressor | Mitsubishi | Toshiba | Mitsubishi | Toshiba | ||
| Water Pump (Optional) | WILO | WILO | WILO | WILO | ||
| Gas Weight (R410A) | g | 650 | 750 | 850 | 1000 | |
| Outdoor noise level(1 meter) | dB(A) | 52 | 53 | 54 | 55 | |
| Outdoor unit | Dimension(L*W*H) | mm | 750*300*498 | 750*300*498 | 933*350*550 | 1002*350*620 |
| Packing(L*W*H) | mm | 820*330*520 | 820*330*520 | 1005*380*580 | 1075*380*650 | |
| NG/WG | kg | 40/48 | 45/53 | 55/65 | 73/87 | |
| Testing condinon: Dry/Wet Bulb Temp.: 20℃/15℃; Water Inlet/Outlet Temp.: 15℃/55℃ | ||||||
Efficiency & Cost Savings
The R410A monobloc air source heat pump for commercial hot water delivers exceptional energy efficiency, significantly reducing operational costs for hotels, apartment buildings, and healthcare facilities. With a high COP (Coefficient of Performance) and advanced inverter technology, this commercial hot water heat pump achieves lower electricity consumption compared to conventional electric water heaters. For facility managers and building owners seeking long-term savings, the R410A air-to-water heat pump offers an optimal return on investment through reduced utility bills and minimal maintenance requirements.
Sustainability & Compliance
Designed with R410A refrigerant, this monobloc air source heat pump for sanitary hot water provides a sustainable alternative to fossil fuel-based water heating systems. While R410A remains a widely adopted refrigerant globally, our unit is engineered to maximize system efficiency while minimizing environmental impact through optimized heat exchanger design and leak-tight construction. For markets transitioning toward lower-GWP refrigerants, this R410A commercial water heater represents a reliable, cost-effective solution during the regulatory transition period. The monobloc configuration eliminates refrigerant piping indoors, further reducing potential leak risks.
Installation & Monobloc Advantage
The integrated R410A air-to-water heater for household and commercial hot water features a monobloc design that simplifies installation and reduces project timelines. Unlike split systems requiring refrigerant piping between indoor and outdoor units, this air source hot water heat pump comes factory-charged and sealed, requiring only water connections and electrical supply at the installation site. This integrated water heater design substantially lowers installation costs, eliminates the need for F-gas certified installers on site, and accelerates commissioning. For contractors and project developers, the R410A monobloc air source heat pump offers a practical, time-efficient solution for new builds and retrofit projects alike.
Applications & High-Temperature Performance
Capable of delivering sanitary hot water up to 65°C, this R410A monobloc air-to-water heat pump is ideally suited for high-demand commercial applications, including hotels, hospitals, schools, and multi-family residential complexes. The high-temperature domestic hot water heat pump ensures consistent supply even during peak usage periods, thanks to its rapid recovery and intelligent control logic. Whether replacing an existing boiler or equipping a new construction project, the R410A all-in-one water heating solution adapts to various building configurations with flexible capacity options ranging from 8kW to 30kW, making it a versatile choice for diverse commercial hot water requirements.
OEM & Supply Chain
As an OEM-ready commercial heating solution, this R410A monobloc air source heat pump for domestic hot water production offers distributors and brand partners exceptional customization flexibility. From control interface localization to housing color and branding, our factory-direct R410A heat pump water heater can be tailored to meet specific market requirements. The monobloc construction further facilitates logistics and warehousing, with standardized dimensions optimizing container loading capacity and reducing shipping costs per unit. For distributors seeking a reliable R410A air-to-water heat pump supplier, our dedicated OEM support ensures rapid lead times, consistent quality, and competitive pricing for bulk orders across European and global markets.
FAQs
This integrated R410A air-to-water heater is designed for residential and light commercial applications requiring reliable domestic hot water (DHW) supply. Typical use cases include:
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Single-family homes and villas – centralized hot water for bathrooms, kitchens, and laundry
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Multi-family apartment buildings – each unit can have its own integrated system or a central solution
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Small hotels, B&Bs, and guesthouses – consistent hot water for guest rooms
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Offices and small commercial buildings – sanitary hot water for restrooms and kitchens
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Retrofit projects – replaces existing gas or electric water heaters without major system modifications
For space-constrained installations, the integrated (all-in-one) design with built-in water tank allows placement in utility rooms, kitchens, or even hallways – not just dedicated boiler rooms .
An integrated air-to-water heater combines the indoor hydraulic unit and the water storage tank into a single, all-in-one indoor unit that connects to an outdoor unit only via refrigerant piping. A split system typically has separate indoor and outdoor units with a standalone hot water cylinder.
Key advantages of integrated design:
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Space-saving – one indoor unit instead of two separate components
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Simpler installation – fewer indoor connections to manage
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Modern aesthetics – can be installed in visible areas without compromising interior design
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Individual zone control – many integrated models support 2 separate heating circuits
The R410A air-to-water heater is capable of delivering hot water up to 60-65°C, which is sufficient for all standard domestic sanitary hot water requirements . Performance specifications vary by model:
| Parameter | Typical Range |
|---|---|
| Heating capacity | 4 – 20+ kW (depending on model and conditions) |
| Max water temperature | 55-65°C |
| COP (Coefficient of Performance) | 3.0 – 4.6 depending on ambient and water temperatures |
| Operating ambient range | Down to -20°C for continuous operation |
The system recovers heat from outdoor air (even at low temperatures) and transfers it to water via a heat exchanger, using R410A refrigerant as the thermal transfer medium .
This integrated R410A air-to-water heater delivers excellent energy efficiency compared to traditional electric or fossil fuel water heaters:
Efficiency metrics (typical):
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COP up to 4.6 under optimal conditions (A7/W35) – meaning 1 kWh of electricity produces over 4 kWh of heat
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EER up to 3.8 for cooling applications
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Significantly lower operating costs compared to electric resistance water heaters
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Energy savings of up to 50-70% versus conventional electric water heating
LG’s inverter technology, for example, optimizes compressor performance by using only the power required for actual operation, reducing energy costs . The unit’s efficiency depends on outdoor temperature, water setpoint temperature, and system design.
Yes. Most R410A air-to-water heaters are engineered for cold climate performance:
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Heating operation down to -20°C ambient temperature
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Some models maintain operation even at -25°C in optimized configurations
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Delivers hot water up to 60°C even at low outdoor temperatures
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Automatic defrost systems ensure reliable performance through harsh winters
For extremely cold regions, some manufacturers offer models with integrated electric backup elements (typically 3kW) to ensure hot water availability during peak demand or extreme conditions .
The integrated design significantly simplifies installation and maintenance:
Installation benefits:
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Indoor unit with built-in water tank – only needs to be connected to the outdoor unit and plumbing system
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No additional hot water cylinder required – reducing space and installation complexity
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Modern exterior – can be installed in utility rooms, kitchens, or other visible indoor spaces
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Standard water connections – compatible with existing household plumbing
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Optional smartphone control and WiFi connectivity for remote monitoring
Maintenance considerations:
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Routine inspections – check water quality, pressure, and electrical connections
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Periodic cleaning – maintain air intake and heat exchanger surfaces
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Refrigerant system – factory-sealed, requiring no regular maintenance under normal operation
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Water tank – consider descaling depending on water hardness
The monobloc/integrated design means no F-gas certified installer is required for indoor connections – refrigerant is sealed within the connected system.
More Information
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